Rosin esterificated resin MRG-130 Glycerol ester of maleic rosin Guilin Chemical Factory Natural Resins & Gum >> Rosin Coatings Inks Glycerol ester of maleic rosin. Used in paints, varnishes and inks. Glycerol ester of maleic rosin. Used in paints, varnishes and inks.